On Fri, May 09, 2014 at 12:42:02PM +0200, Bud Millwood wrote: > I think I've located my problem - it's a question of choosing the right > pid. I'm debugging a multi-threaded application, and "ps" doesn't show the > pid for each thread, whereas htop does. Choosing the pid of a specific > thread causes strace to give me the statistics I'm looking for. > > So it seems that if I run "strace -c" on a pid that is blocked in a system > call, it doesn't print statistics at all. It's a little misleading; maybe > it should print out statistics, and just show that 100% of the time it was > in that call. Or maybe it can't detect the current call if strace was > started after the call was made?
strace -c prints statistics for exited syscalls. If no syscall exited (for the given personality), no statistics is printed. -- ldv
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